org.apache.lucene.analysis.ru
Class RussianLowerCaseFilter
java.lang.Object
org.apache.lucene.util.AttributeSource
org.apache.lucene.analysis.TokenStream
org.apache.lucene.analysis.TokenFilter
org.apache.lucene.analysis.ru.RussianLowerCaseFilter
public final class RussianLowerCaseFilter
- extends TokenFilter
Normalizes token text to lower case, analyzing given ("russian") charset.
- Version:
- $Id: RussianLowerCaseFilter.java 806886 2009-08-22 20:36:06Z rmuir $
Methods inherited from class org.apache.lucene.util.AttributeSource |
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, restoreState, toString |
RussianLowerCaseFilter
public RussianLowerCaseFilter(TokenStream in,
char[] charset)
- Deprecated. Use
RussianLowerCaseFilter(TokenStream)
instead.
RussianLowerCaseFilter
public RussianLowerCaseFilter(TokenStream in)
incrementToken
public final boolean incrementToken()
throws IOException
- Description copied from class:
TokenStream
- Consumers (ie
IndexWriter
) use this method to advance the stream to
the next token. Implementing classes must implement this method and update
the appropriate AttributeImpl
s with the attributes of the next
token.
This method is called for every token of a document, so an efficient
implementation is crucial for good performance. To avoid calls to
AttributeSource.addAttribute(Class)
and AttributeSource.getAttribute(Class)
or downcasts,
references to all AttributeImpl
s that this stream uses should be
retrieved during instantiation.
To ensure that filters and consumers know which attributes are available,
the attributes must be added during instantiation. Filters and consumers
are not required to check for availability of attributes in
TokenStream.incrementToken()
.
- Overrides:
incrementToken
in class TokenStream
- Returns:
- false for end of stream; true otherwise
Note that this method will be defined abstract in Lucene
3.0.
- Throws:
IOException
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